diff options
Diffstat (limited to 'arch/mips/include/asm/processor.h')
| -rw-r--r-- | arch/mips/include/asm/processor.h | 86 |
1 files changed, 65 insertions, 21 deletions
diff --git a/arch/mips/include/asm/processor.h b/arch/mips/include/asm/processor.h index 2a5fa7abb34..ad70cba8daf 100644 --- a/arch/mips/include/asm/processor.h +++ b/arch/mips/include/asm/processor.h @@ -28,7 +28,6 @@ /* * System setup and hardware flags.. */ -extern void (*cpu_wait)(void); extern unsigned int vced_count, vcei_count; @@ -44,11 +43,16 @@ extern unsigned int vced_count, vcei_count; #define SPECIAL_PAGES_SIZE PAGE_SIZE #ifdef CONFIG_32BIT +#ifdef CONFIG_KVM_GUEST +/* User space process size is limited to 1GB in KVM Guest Mode */ +#define TASK_SIZE 0x3fff8000UL +#else /* * User space process size: 2GB. This is hardcoded into a few places, * so don't change it unless you know what you are doing. */ #define TASK_SIZE 0x7fff8000UL +#endif #ifdef __KERNEL__ #define STACK_TOP_MAX TASK_SIZE @@ -93,18 +97,48 @@ extern unsigned int vced_count, vcei_count; #define NUM_FPU_REGS 32 -typedef __u64 fpureg_t; +#ifdef CONFIG_CPU_HAS_MSA +# define FPU_REG_WIDTH 128 +#else +# define FPU_REG_WIDTH 64 +#endif + +union fpureg { + __u32 val32[FPU_REG_WIDTH / 32]; + __u64 val64[FPU_REG_WIDTH / 64]; +}; + +#ifdef CONFIG_CPU_LITTLE_ENDIAN +# define FPR_IDX(width, idx) (idx) +#else +# define FPR_IDX(width, idx) ((FPU_REG_WIDTH / (width)) - 1 - (idx)) +#endif + +#define BUILD_FPR_ACCESS(width) \ +static inline u##width get_fpr##width(union fpureg *fpr, unsigned idx) \ +{ \ + return fpr->val##width[FPR_IDX(width, idx)]; \ +} \ + \ +static inline void set_fpr##width(union fpureg *fpr, unsigned idx, \ + u##width val) \ +{ \ + fpr->val##width[FPR_IDX(width, idx)] = val; \ +} + +BUILD_FPR_ACCESS(32) +BUILD_FPR_ACCESS(64) /* - * It would be nice to add some more fields for emulator statistics, but there - * are a number of fixed offsets in offset.h and elsewhere that would have to - * be recalculated by hand. So the additional information will be private to - * the FPU emulator for now. See asm-mips/fpu_emulator.h. + * It would be nice to add some more fields for emulator statistics, + * the additional information is private to the FPU emulator for now. + * See arch/mips/include/asm/fpu_emulator.h. */ struct mips_fpu_struct { - fpureg_t fpr[NUM_FPU_REGS]; + union fpureg fpr[NUM_FPU_REGS]; unsigned int fcr31; + unsigned int msacsr; }; #define NUM_DSP_REGS 6 @@ -133,7 +167,7 @@ union mips_watch_reg_state { struct mips3264_watch_reg_state mips3264; }; -#ifdef CONFIG_CPU_CAVIUM_OCTEON +#if defined(CONFIG_CPU_CAVIUM_OCTEON) struct octeon_cop2_state { /* DMFC2 rt, 0x0201 */ @@ -178,13 +212,26 @@ struct octeon_cop2_state { /* DMFC2 rt, 0x025A; DMFC2 rt, 0x025B - Pass2 */ unsigned long cop2_gfm_result[2]; }; -#define INIT_OCTEON_COP2 {0,} +#define COP2_INIT \ + .cp2 = {0,}, struct octeon_cvmseg_state { unsigned long cvmseg[CONFIG_CAVIUM_OCTEON_CVMSEG_SIZE] [cpu_dcache_line_size() / sizeof(unsigned long)]; }; +#elif defined(CONFIG_CPU_XLP) +struct nlm_cop2_state { + u64 rx[4]; + u64 tx[4]; + u32 tx_msg_status; + u32 rx_msg_status; +}; + +#define COP2_INIT \ + .cp2 = {{0}, {0}, 0, 0}, +#else +#define COP2_INIT #endif typedef struct { @@ -227,8 +274,11 @@ struct thread_struct { unsigned long cp0_baduaddr; /* Last kernel fault accessing USEG */ unsigned long error_code; #ifdef CONFIG_CPU_CAVIUM_OCTEON - struct octeon_cop2_state cp2 __attribute__ ((__aligned__(128))); - struct octeon_cvmseg_state cvmseg __attribute__ ((__aligned__(128))); + struct octeon_cop2_state cp2 __attribute__ ((__aligned__(128))); + struct octeon_cvmseg_state cvmseg __attribute__ ((__aligned__(128))); +#endif +#ifdef CONFIG_CPU_XLP + struct nlm_cop2_state cp2; #endif struct mips_abi *abi; }; @@ -241,13 +291,6 @@ struct thread_struct { #define FPAFF_INIT #endif /* CONFIG_MIPS_MT_FPAFF */ -#ifdef CONFIG_CPU_CAVIUM_OCTEON -#define OCTEON_INIT \ - .cp2 = INIT_OCTEON_COP2, -#else -#define OCTEON_INIT -#endif /* CONFIG_CPU_CAVIUM_OCTEON */ - #define INIT_THREAD { \ /* \ * Saved main processor registers \ @@ -271,8 +314,9 @@ struct thread_struct { * Saved FPU/FPU emulator stuff \ */ \ .fpu = { \ - .fpr = {0,}, \ + .fpr = {{{0,},},}, \ .fcr31 = 0, \ + .msacsr = 0, \ }, \ /* \ * FPU affinity state (null if not FPAFF) \ @@ -296,9 +340,9 @@ struct thread_struct { .cp0_baduaddr = 0, \ .error_code = 0, \ /* \ - * Cavium Octeon specifics (null if not Octeon) \ + * Platform specific cop2 registers(null if no COP2) \ */ \ - OCTEON_INIT \ + COP2_INIT \ } struct task_struct; |